Sql 按照指定天數時間段查詢

begin

try 
declare
@begintime
datetime='
2017-02-01
'declare
@endtime
datetime='
2017-03-3 23:59:59
'declare
@showtype
int=0--
展示的型別 0=日 1=十日 2=月
declare
@cuscount
int--
成交客戶數
declare
@totldate
int=
10--
統計分組天數
select
@cuscount
=count(1) from
( 
select o.memberid from dbo.[
order]o 
where o.payeddatetime between
@begintime
and@endtime
group
byo.memberid
) cuscount
if(@showtype=0
) 
begin
----日
select
convert(varchar(10),a.payeddatetime,23) as showday,count(1) as 成交筆數,sum(a.payed) as 成交金額,@cuscount
as 成交客戶數 from
( 
select o.payed,o.payeddatetime from dbo.[
order]o 
where o.payeddatetime between
@begintime
and@endtime
) as
a 
group
byconvert(varchar(10),a.payeddatetime,23
) ; 
endelse
if(@showtype=1
) 
begin
----十日
select a.fistdate as showday,count(1) as 成交筆數,sum(a.payed) as 成交金額,@cuscount
as 成交客戶數 from
( 
select o.payed,t.evdate,convert(int, evdate-
@begintime)/
@totldate gid,@begintime
+convert(int, evdate-
@begintime)/
@totldate
*@totldate fistdate from
(select
@begintime
+number evdate from master..spt_values where type='p
'and
@begintime
+number
<=
@endtime
) t 
left
join dbo.[
order
] o on
convert(varchar(100), o.payeddatetime, 112)=
convert(varchar(100), t.evdate, 112
) 
where o.tradestatus=
'trade_finished
'and o.paystatus=
1and o.payeddatetime is
notnull
and o.isteambuyrede !=
'rede
'and o.storeid=
0and o.payeddatetime between
@begintime
and@endtime
) as
a 
group
bya.gid,a.fistdate;
endelse
if(@showtype=1
) 
begin
----月
select
substring(convert(varchar(10),a.payeddatetime,23),1,7) as showday,count(1) as 成交筆數,sum(a.payed) as 成交金額,@cuscount
as 成交客戶數 from
( 
select o.payed,o.payeddatetime from dbo.[
order]o 
where o.payeddatetime between
@begintime
and@endtime
) as
a 
group
bysubstring(convert(varchar(10),a.payeddatetime,23),1,7
) 
endelse
begin
select
''end
endtry
begin
catch 
end catch

最主要是這裡 

(select @begintime+number evdate from master..spt_values where type='p' and @begintime+number<=@endtime)

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